Ultramarine 1 Flash claims Fable 5-level performance at 60x lower cost, weights soon open
ycombinator · x · 2026-10-15
The account @bertgodel announced Ultramarine 1 Flash, a self-described frontier-class open-source model for knowledge work, claiming near-parity with Fable 5 at 1/60th the cost. Reportedly post-trained by a 5-person team for about $300k all-in; API is live now and weights are said to release in two weeks. These claims come from a third-party account and remain unverified.
Related event: Five-person team trains frontier-level open model for $300K(4 posts)→
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